Gas range structure



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' GAS RANGE STRUCTURE Filed Dec. 24, 19:54 4 Sheets-Sheet 1 I v O /W J8J6 fleai.

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GAS RANGE STRUCTURE Filed Deb. 24, 1934 4 Sheets-Sheet 2 I l 1 l"11/11/1111/1/1/11 I H /11,,

Nov. 3, 1936. B, pl'qATTg-r AL 2,059,534

GAS RANGE STRUCTURE Filed Dec. 24, 1934 4 Sheets-Sheet s Nov. 3, 1936.

B; PRATT El AL V GAS RANGE STRUCTURE 4 Sheets-Sheet 4 Filed- Dec. 24,1934 I swuwwbo'w Z3606 flak; I 6607ge; T we cock.

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Patented Nov. 3,1936

UNITED STATES PATENT OFFICE GAS BAN GE STRUCTURE Best Pratt and GeorgeF. Weinreich, Chicago, IlL,

assignors to Brake Equipment a Supply Company, Chicago, Ill.-, acorporation of Illinois Application December 24, 1934, Serial No.759,122

4 Claims. (Cl. 158-104) 5 vide a gas range structure having a fuelsupply.

unit for the top burners wherein Venturi or supply tubes leading to thevarious gas burners are formed integrally; permitting all of the burnersto be supported at a common level and 10 readily removed, with the fuelsupply unit, from the burner box.

Heretofore, it has been usual to provide a separateVenturi tube leadingto each gas burner. Such a structure is undesirable because it re- 15quires that separate supporting means must be provided for each Venturitube and burner. A further disadvantage of such an arrangement is that,since the Venturi tubes are independently supported, the various burnersmay be positioned 20 at diiferent levels in the burner box.

Anotherobject of the invention is to provide a means for supportingVenturi tubes. and gas burners in the burner box of a gas range.

, Other objects and advantages of the inven- 25 tion will be apparentfrom the following specification and drawings:

Figure 1 is a plan view of a fuel supply unit of the present inventionshowing the structure .applied to the burner box of a gas range.

30 Figure 2 is a side view of the structure shown in Figure 1, withportions thereof in vertical cross section.

Figure 3 is a horizontal sectional view taken on the line 3-3 of Figure4.

' 5 Figure 4 is a vertical longitudinal section taken on the line. 4-4of Figure 3.

Figure 5 is a transverse sectional view taken on the line 5.5'of Figure3.

Figure 6 is a plan view of a modified form of 40 fuel supply unitshowing the structure applied to a burner box.

' Figure"! is a side view of the structure of Figure 6, withportioiis invertical section.

Figure 8 is a view partly in plan and partly in 45 horizontal section.

Figure 9 is a vertical sectional view on the line 9-9 of Figure 8, and

Figure 10 is a view, in vertical section, on the line l---l0 of Figure8.

50 Referring to Figures 1 to 5, the numeral l0 designates the burner boxof a gas range provided with a front wall II. A manifold and valvestructure of the type disclosed in our application for Manifold andvalve structure, flied November 55 14, 1934, Serial No. 753,057, andindicated by the numeral i2, is shown mounted in the front wall of theburner box. As shown in Figure 2, the burner box is provided with theusual top structure including bowls I3 surrounding each burner.

The fuel supply unit of the present invention comprises a body portionl4 having upper and lower hollow arms or Venturi tubes i5 and 16,respectively, projecting forwardly therefrom toward the valves whichcontrolihe delivery of gas'to the unit. The unit is cast inone piece andincludes an arm or Venturi tube for each of the cooking burners withwhich the unit is to be used.

The unit as disclosed in the present application is designed for usewith four burners. In the present embodiment of the invention,particularly adapted for use with the manifold structure of our abovementioned application, the arms or Venturi tubes are arranged in pairs,each pair including an upper tube It and a lower tube I6, the lower tubeof each pair being positioned directly beneath the upper tube of thatpair, the lower tubes being positioned in a horizontal plane parallel tothe horizontal plane in which the upper tubes are arranged and the outeror free ends of the tubes being spa ed apart to be in alignment withtheoutlet nipples l8 of the valves with which they communicate. It will beunderstood that the relative positions of the tubes may be changed inaccordance with the arrangement of the burner valves with which theycommunicate.

As is best shown in Figure 3, the upper tubes i5 diverge from the bodyportion ll of the unit and then extend forwardly in parallel relation,the outer or forward ends or inlets IQ of the tubes being substantiallyfunnel-shaped to give a Venturi action. The passage 20 provided withineach upper tube l5 extends into the body portion ll of the unit, thesetwo passages being separated 0 within the-body portion by a verticallyextending wall .Zl. At the rear end of the body portion of the unit, thepassages 20 diverge at right angles and each terminates in a threadedaperture-or outlet 22 in which a. short length of pipe 23 is threaded.The burners I! at the rear of the burner box are carried upon the pipes23.

The lower tubes it of the unit diverge down wardly and outwardly fromthe body portion l4 from beneath the tubes I5 and thence forwardly,their outer ends or inlets I! also being shaped to give a venturiaction. As shown in Figure 4, the passage 21' provided in-each of thelower tubes l6 extends into the body portion of the unit at a pointbehind the passage 20 of the upper tube IS on the same side of thedevice. At this point, each passage 21 is provided with a return bend asat 28 (Figure 3) and thence extends outwardly in a laterally arrangednipple 5 29, the inner surface of which is threaded as at 30 to receivea short length of pipe 3| carrying the front burner I I at that side ofthe burner box.

By the construction described above, each of the passages is ofsubstantially uniform cross section throughout its length and therelative arrangement of the passage is such that the flow of gas willnot'be retarded.

The present invention includes the provision of the nipples l8 carriedby the gas valves and adapted to cooperate with the inlets I9 of thevarious tubes to support that'end of the unit. Each inlet I9 is providedwith a pair of superimposed and relatively movable plates 35 arranged topermit the supply of air to the tubes to be adjusted. These plates aresecured to the tubes in the usual and well known manner but are providedwith central apertures 36 and the nipples IB projecting inwardly fromthe manifold.

I2 extend into these apertures.

The provision of a pair of nipples l8 and mouths l9, or, as in thepresent embodiment, the provision of nipples l8 and mouths 19 at cornersof a polygonal or rectangular area, serves to firm- 3 1y support theforward end of the unit against horizontal and vertical movement. Theburner box In is provided with a cross bar 31 having an aperture 38 atits center and a stud or projection 39 provided upon the lower face ofthe rear end of the body portion l4 of the unit fits into this aperture,thereby acting, with the nipples iii, to hold the entire unit againstlateral movement. The cross bar 31 extends beneath the pipes 23 carryingthe rear burners I! and the 40 lower wall of each rear bumermay restupon the cross bar 31, as shown in Figure 2, thereby further preventingthe Venturi tube device from rocking.

It will be noted that the stud 39 is located at one apex of a triangledefined by this stud and g the nipples iii of the manifold, and siicethe weight of the unit will hold the stud seated in the aperture 38 ofcross bar 31, the inlets i9 will be firmly held in position on thenipples I6.

A pipe 40 leads from the rear wall of the manifold structure i2 andbeneath the fuel supply unit, this .pipe being provided at its inner end,with a pilot light burner jet 4| extending upwardly into an aperture 42preferably centrally arranged with respect to the burners H. A

chamber 43 formed integral with the body portion I4 of the unitsurrounds the upper end of the aperture 42, the chamber 43 preferablybeing provided with apertures 44 to permit the cir- 0 culation of airtherethrough. Hollow arms 45 extend from the chamber 43 toward eachburner II, as best shown in Figures 1 and 4, and tubes 45, eitherintegral with or threaded in the arms 45, extend from the latter to apoint closely adia- 5 cent an aperture 48 provided in the side wall ofeach burner l1. s

' It will be noted that by the above arrangement, the fuel supply unitis so combined with elements of the pilot burner structure that the fuelsupply 70 unit and burners and the portions of the pilot burnerstructure carried thereby may be readily removed from the burner box forcleaning or any replacement. In order to entirely remove the unit andburners from the burner box, it is only 75 necessary to lift the rearend of the unit to release the stud 39 from the. aperture 38 and theunit, with the burners l'i, may then be drawn outwardly from the nipplesl8 to entirely free the Y structure from the burner box. Since the pilotlight burner 4| is not attached to the unit, it will 5 not interferewith the above operation.

The form of our inventionshown in Figures 6 to 10 comprises twohorizontally spaced and parallel tubes 50 and 5| joined by an integralconnecting structure 52. The connecting strucl0 ture 52 is of Xformation, comprising two intersecting arms 53. Burners I! arepositioned on the tubes 50 and 5| opposite the ends of both of the arms53. A pilot light housing 54 is positioned at the point of intersectionof the arms 53 16 so that it will be centrally arranged with respect toall of the burners. All of the structure described above is preferablycast as one piece.

As best shown in Figures 7 and 9, each of the tubes 50 and 5| branchesinto two vertically 20 spaced arms at its forward end, the upper arm 56preferably being a longitudinal extension of the body portion of thetube and the other arm 51 extending downwardly and thence parallel withthe upper arm. Each of the arms 56 and 25 51 is provided with an inlet59 which is substantially funnel-shaped to give a venturi action. Theinlets are provided with superimposed and relatively movable platesarranged to permit the supply of air flowing therethrough to be ad- 30justed, these plates being formed in the same manner as the plates 35 ofthe structure shown in Figures 1 to 5,.and so that they may flt over thenipples l8 projecting inwardly from the manifold l2. 35

As is best illustrated in Figures 8 and 9, the inlet 59 of the upper armof each of the tubes 50 and 5| opens into a passage 60 communicatingwith the forward burner of that tube, the passage being closed at itsrear or ,inner end by a parti- 40 tion or wall 6|. The inlet 59 of thelower arm 51 of each tube opens into apassage 62 which extends throughthe arm and through the body portion of the tube to the burner formed atthe rear end of that tube, the wall or partition 6| 45 serving to closethe passages 60 and 62 to each other. As shown in Figures 6 and 8, anear or lug 54a projects from the rear wall of the pilot burner housing,this ear being provided with an aperture 54b. By this arrangement, thefuel 50 supply unit may be secured to a cross bar or supporting member31a in the burner box by a bolt and nut, the bolt extending through theaperture 54b and through an aligned aperture in the cross bar, the unitthereby being prevented from 55 moving horizontally from the nipples l8of the manifold structure II. If desired, the aperture }5341: may fitover an upstanding lug on the cross ar.

Each of the intersecting arms 53 of the tube 00 connecting structure 52includes passages 66 opening from the pilot burner housing 54 andextending to a point close to the burner housing arranged opposite theend of that arm. Each burner housing includes a nipple 61 extending 5toward the aligned passage 66, the aperture 63 provided in the nipplebeing formed during th casting of the unit. By this arrangement, theopening of the valve communicating with any one of the top burners willcause the gas issuing from the burner to be ignited by the pilot lightburner with which it communicates through the aperture 68 and passage66.

The pilot light housing 54 may be provided with a removable aperturedcover 59 and the 7 aoaaese removed from the burner box withoutdisconnection of the pilot burner 40 or the pilot burner supply tube 40.

Since the apertured nipple 677 provided in each top burner housing isformed during the casting of the unit, the difficult problem heretoforepresented in the drilling of such a hole is eliminated in-the presentstructure.

It will be observed that the fuel unit shown in Figures 6 to 10 can bereadily removed-from the burner box by lifting the inner end of the unitto release the sockets from the lugs and by then sliding the inletplates of the unit from the nipples It of the manifold it.

The arrangement whereby the gas flowing from the lower nipples i8 movesupwardly through the lower arms of the tubes and Si insures that therewill be a full and free flow of gas to the rear burners, because of thefact that the gas naturally tends to flow upwardly.

Since the structure of Figures 6 to 10 is cast integral, it can bereadily manufactured. Its integral construction also enables it to bereadily installed in a range.

It will be understood that the invention is not limited to the detailsof construction shown in the drawings and described in the specificationand that the examples of the uses of the inventions which havebeen-given do not include all of the uses of which they are capable;also, that the phraseology employed in the specification is for thepurpose of description and not of limitation.

We claim: Y

1. As an article of manufacture, a fuel mixing, structure for gas'ranges comprising an element having a plurality of non-communicatingpassages therein, each passage including an inlet and an outlet, theinlets of the passages being respectively spaced in one plane to definethe comers of a rectangular planar area and to fit upon the nozzles of agas supply manifold, the outlets of the passages being spaced in a.plane at right angles to the first plane to support range gular planararea, and pilot burner flame tubes projecting from a point between saidpassages in ward the cornersof the last-named rectan area.

2. As an article of manufacture, a fuel structure for gas ranges,including a pair of spaced tubular elements, each element being provided with .a passage having an inlet and an outlet, burner flame tubesrigidly connecting said tubular elements, said tubes projecting from andbeing rigidly connected to acentral pilot burner housing positionedintermediate the two elements lit and having their outlets positionedadjacent the w tubular element outlets.

3. As an article of manufacture, a fuel mixing structure for gas ranges,including a' pair oi spaced tubular elements, each element being pie-'-vided with a pair of passages having an inlet and an outlet, the inletsof the passages of the two elements terminating and being spaced in oneplane to define the comers of a polygonal planar area, and the outletsbeing spaced in a plane at right angles to the first plane "tosubstantially define the corners of a second polygonal planar area, thetubular elements being also spaced in the latter plane, pilot burnerflame tubes rigidly connecting said elements, said tubes projecting fromand being rigidly connected to a central pilot burner housing positionedbetween said elements and having their outlets positioned adjacent thetubular element outlets.

4. As an article of manufacture, a fuel mixing structure for gas ranges,including a pair of spaced tubular elements, each element being providedwith a pair of passages having an inlet and an outlet, the inlet oi onepassage of each element being arranged above the inlet of the otherpassage thereof and the outlet of one passage being positioned inadvance of the outlet of the other passage, pilot burner flame tubesrigidly connecting said elements, said tubes projecting from and beingrigidly connected to a pilot burner housing arranged intermediate thetwo elements and having their outlets positioned adjacent the tubularelement outlets.

BEST PRA'I'I'. GEORGE F. WEINREICH.

